ben-danzig/flutter_bball_app ? reverse-engineered prompt

Build me a Flutter app for basketball players who want to train on their own and get better without needing a coach or another person there.

I want a dark themed mobile app that lets users pick from a set of structured workouts, then walk them through drills with audio cues so they can keep their eyes on the court instead of the screen. The training should include timed drills, rep based drills, make target challenges, and a read and react style drill for quick decision making. After each workout, the app should save the session, let users add notes about how it felt, and show their progress over time with workout history and simple trend views. Use Firebase for login and saving data if needed, and make sure it works well on mobile and web. If you need to look up current Flutter or Firebase docs online, feel free to do that.